知变量x,y满足约束条件x-2y+1≤0,2x-y≥0,x≤1,则z=y+1/x+1的取值范围为?k

英语翻译请问,全国普通话证书---二级甲等 这个名称如何翻译成英文?要标准的! 世界上一天大约有多少人因不遵守交通规则而死亡要具体数字 有关由不遵守交通规则而引发的事故 当我们遵守交通规则时,（怎么样）「三个」 当我们不遵守交通规则时,（怎么样）「三个」 have a chat翻译成中文 求Let It Go英文歌词要插曲哟 let it go 歌词 英语翻译不要翻译成姚贝娜版本的,我要易迪娜门泽尔的原唱版本翻译过来的那种. I'm sorry I can't ___ you ,because I have to help my mom.A stay B join I help my mom make dinner 这里的做饭为什么不用 cook A word that has changed the world 演讲稿 求以a word that has changed the world为主题的一篇演讲稿 a the word that has changed the world 为主题的演讲稿选定词creativity 最好能以creativity为主题 三分钟的演讲稿、 亲们,明天就要用,再求一遍，随便写一下、老师会帮忙修改的， we haven't heard from jane for a long time -what do you suppose to her中suppose后为何填has happened 一心一意做好每一件事英语怎样翻译 we haven't heard from Jone for a long time.--what do you suppose___to her.以下选哪个答案was happening B.is happened C.has happened D.had happened.这是被动语态的单项选择题 We haven't heard of Jane for a long time--What do you suppose ______to her?A.was happeningC.has happened为什么不能选A 外教口语,海淀那儿的杰克美语怎么样? 外教口语,杰克美语的好不好?跟华尔街和新东方比呢?老师师资好不好?适合工薪阶层? 有没有像let it go一样好听的英文歌 I want to buy_________ Can you show it to me?A five tomatoes B two giass of juice C some sheepD a kilo of meat应该选哪个 I haven't heard from Henry for a long time.-What do you suppose----to him?A.was happenningB.to happenC.has happendD.had happend We haven't heard from her for a long time.————What do you suppose ____to her?A.was happening B.to happen C.has happened D.having happened为什么不选B呢? 有没有像let it go一样的英文歌 形容女子姿态的词句,比较美的诗词句等. 把let it go 这首英文歌翻译成中文来唱. 求一篇英语演讲故事,三分钟左右即可,最起码是初中水平的,内容不限,给力点啊( ⊙ o ⊙ Over the last 200 years,over harf () the trees on Earth have been cut down,填介词. ._____trees have been cut down so droughts and floods always happen._____trees have been cut down so droughts and floods always happen.A.One or two B.A thousand and a hundred C.Hundreds and thousands of D.Hundred and thousand of i haven't heard from her for a long time什么时态?haven't heard 换成didn't hear、don't hear或者am not hearing 为什么? I haven't heard from Kelly for a long time .(同义句转换)I ----------from Kelly for a long time. In china's capital ___ Beijing.great change has taken place.这里要填介词吗?填什么?还是什么都不用填?